Speed up the upgrading of China's radio industry

Motorola's communications products, according to Shanghai Trading Co., Ltd. General Manager Wang Xin introduction of the last century 70's, Motorola's first digital technology into the design of wireless walkie-talkie in 1975 to produce the encrypted digital voice walkie-talkie, in 1980 developed a digital data reduction systems. At present, Shenzhen HYT Science & Technology Co., Ltd., Shenzhen Tian Li Tong Information Technology Co., Ltd., has a digital radio products.

"With the development of radio communications technology, people are required to improve the quality of wireless communications, as well as the growing shortage of spectrum resources, digital radio will have a huge market demand. At present, worldwide demand for digital radio is also increasing, in particular, in the Department of Public Safety. "description, according to Wang Xin, digital radio has many advantages: First, you can make better use of spectrum resources. With digital technology similar to cellular and digital radio channels at a specified load more users and improve spectral efficiency, which is a solution to frequency congestion program, with a long-term significance; Second, it could effectively improve call quality. As digital communications technologies have the system error correction function, and analog radio than in a wider range of the signal environment for better voice audio quality, which received some of the audio will be less noise, sound, and more clear; three digital radio can also enhance and improve the voice and data integration, change control signals with the communication distance increases to reduce vulnerability. With similar integrated analog voice and data systems, the digital radio can provide better data processing and interface capabilities, so that more data applications can be integrated into a single structure of two-way wireless communication base stations, allowing voice and data services better integrated and more convenient. These three characteristics have determined the future of digital radio will become the development trend of walkie-talkie.

In the European and American markets in 2003, digital radio and analog radio ratio is 2:8, by 2004, becomes a 5:5 is expected this year, its proportion will be 8:2. "This change also reflects the development of digital radio is the direction." Xin Wang says.

The industry believes that analog radio to digital technology development, help improve the radio industry, the overall quality and level. But also for enterprise technology and strength of the test will make radio industry to re-shuffle, a number of disadvantaged businesses in danger of being out of position.

"Although representatives of the digital trend, but is already very mature analog technology, in a very long period of time will continue to design services for the walkie-talkie, digital walkie-talkie in a short time can not be replaced analog walkie-talkie." According to Chinese Radio Sports Association Office Liu Tao, China's relative to the rest of the world, walkie-talkie market, the gap is very big. Although in recent years along with rapid economic development, the use of walkie-talkies have developed rapidly, but its volume and penetration with a great gap between European and American markets. "At present, many domestic manufacturers for a large number of walkie-talkie radio is still in the trial and exploratory stage, is still the main production simulation walkie-talkie."

According to Liu Tao, at present analog walkie-talkie technology is already very mature, the key device has been very reliable, in terms of call quality and cost-effective from the basic functions and point of view, fully meet the different industries, different levels of user needs, the user can adapt to different consumer levels needs. "The digital radio is expensive, are generally used for command and dispatch, government departments and large enterprises. While most of the walkie-talkie users is another group of users, a large quantity of low price would have been acceptable. Therefore, whether in China or in many of the world area, analog radio will continue to occupy a longer period of time most of the market share of walkie-talkie. "Tao predicts that digital radio only if the cost down dramatically, and its technology is also more manufacturers to master all kinds of different grade digital walkie-talkie for different user groups can be accepted, the digital radio will it be possible to replace the simulator.

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